Internet Data Sheet
HY[B/I]18T256[40/80/16]0B[C/F](L)
256-Mbit Double-Data-Rate-Two SDRAM
FIGURE 8
Method for calculating transitions and endpoint
6/( ꢌ X M6
644 ꢍ ꢁX M6
6/( ꢌ ꢁX M6
644 ꢍ X M6
T,:
T(:
T202% BEGIN POINT
T2034 END POINT
6/, ꢍ ꢁX M6
6/, ꢍ X M6
644 ꢌ X M6
644 ꢌ ꢁX M6
4ꢂ 4ꢁ
T,:ꢋT202% BEGIN POINT ꢎ ꢁꢏ4ꢂꢌ4ꢁ
4ꢂ 4ꢁ
T(:ꢋT2034 END POINT ꢎ ꢁꢏ4ꢂꢌ4ꢁ
FIGURE 9
Differential input waveform timing - tDS and tDS
$13
$13
T$(
T$(
T$3
T$3
6$$1
6)(ꢐACꢑ MIN
6)(ꢐDCꢑ MIN
6
2%&ꢀDCꢁ
6),ꢐDCꢑ MAX
),ꢐACꢑ MAX
633
6
FIGURE 10
Differential input waveform timing - tlS and tlH
#+
#+
T)(
T)(
T)3
T)3
6$$1
6)(ꢐACꢑ MIN
6)(ꢐDCꢑ MIN
62%&ꢐDCꢑ
6),ꢐDCꢑ MAX
6),ꢐACꢑ MAX
Rev. 1.11, 2007-07
11172006-LBIU-F1TN
53
QIMONDA [ QIMONDA AG ]
